Hollow water-cooled structure



L. L. KNQX. HOLLOW WATER COOLED STRUCTURE.

2 SHEETS-SHEET l FILED DEC. 20| 1920.

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Jan. 16,1923.' 1,442,225.. A L. L. KNOX. -HoLLow wma cooLED STRUCTURE.

FILED DEC. 20| 1920.

Patented Jan. I6, 1923.

UNITED STATES PATENT o-.FFlufc-E. y

LU'THEE L. KNOX, O'E BE'r'irEvUE,l rENNsYLvANiA, AssIGNOE "ro BLAW-KNOX COM- PANY, OE PITTSBURGH, PENNSYLVANIA, A CORPORATION or. ritin/v JERSEY.

HOLLOW WATER-'COO'LED s'rmi'c'rUEE.

Application andre-@mbar 2o, 1920.` 4serial No. 431,8?6.

To all 'whom t mag/concern.'

Be itknown that I, LUTHER L. KNOX, a citizen of the United States, residing at Bellevue, county of Allegheny, and State of Pennsylvania, have invented a new and useful Improvement in Hollow Tater-Cooled Structures, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a longitudinal section of a portion of one form of structure embodying my invention;

AFigure 2 is a section on the line II--II of Figure l;

Figure 3 is a plan view, broken away, showing a portion of another form of structure embodying my invention;

Figure 4 is a section on the line IV-IV of Figure 3;

Figure 5 is a detail sectional view on a larger scale showing one of the pockets; and

Figure 6 is an inverted sectional plan view of the parts shown inFigure 5.

My invention has relation to certain new and useful improvements in hollow watervcooled structures, such as are usedl in cooling furnace walls, and in water-cooled ioors, bulk heads and the like.

In the use of structures of this character it is extremely desirable to prevent the formation of steam pockets within the structure since such formation is frequently accompanied by disastrous results.

The object of my invention is to provide means of efiicient and effective character whereby the formation yof such pockets is entirely eliminated.

The nature of my invention will be best understood by referencefto the accompanying drawings in which I have shown two different embodiments thereof, which will now be described, it being premised, however, that it isillustrative only, and that it can take other forms within the spirit and scope of the appended claims.

Referring rst to that form of my invention shown in Figures 1 and 2, the numeral 2 designates a hollow sheet metal structure which is designed to be set in a vertical position and which is provided with any usual or suitable means for the introduction of a cooling medium, preferably water.

In accordancewith my invention Itprovide the top wall of this structure with one or more ofi-set portions 3, these off-set portions being at the highest point of the structure and forming each a pocket 4, which is at a higher level than yany part of t-he interior of the structure.

5 designates an off-take pipe for the heated water and steam, this pipe having as many branches 6 as there are pockets 4, each branch extending upwardly to about the level of the bottoni of the pocket and being open at its upper end. These branch pipes may be secured in any suitable way, as by setting them in spiders 7. Preferably the spiders are provided with guard lugs 8 in order to prevent the upper end ofthe pipes from being seated too high.

It will be readily seen that the heated water in order to escape must rise into the pockets 4 and thatV any and all steam which may be formed will escape into said pockets and pass out through the escape pipe with the heated water.

F igures and 4 show the application of my invention to a hollow water-cooled metal structure which is designed to be placed in horizontal position, as in a water-cooled floor. In this case the pockets 4a are formed in the top horizontal wall of the structure, the off-take pipes 5 and 6a being arranged in the same manner as in the form first described. i

It will be readily understood that the.

number and arrangement of the pockets of any particular structure will depend upon the characterand shape of the structure.

The advantage of. my invention will be y apparent since the provision of the off-set pockets gives a free escape to all steam which may form in the interior of the structure 2. A hollow structure adapted to have a cooling medium circulated therethrough, the

top Wall of such structure having therein an upwardly olf-set pocket communicating with the interior of the structure, and an off-take pipe extending upwardly to the said pocket, the structure having internal means cooperating with said pocket for seating and supporting the said pipe, substantially as described. v

3. A hollow metal structure adapted to have a cooling medium circulated therethrough, said structure having its top wall provided with `a plurality of `off-set portionsv forming interior pockets at a higher level than the interior of the structure proper, an off-take pipe having a branch ex- 15 In testimony whereof, I have hereunto 20 set my hand.

' LUTHER L. KNOX. 

